Another way to set mnemonic for JMenuItem?

问题

So, I have a "Open Project" menu item, and I want to set mnemonic to it. I prefer it to be 'e' character from Project word. But when I set it with

openProjectMenuItem.setMnemonic('e');

it sets 'e' character from Open word as mnemonic. Is there a way to achieve what I want?

回答1:

The method setMnemonic(char mnemonic) is obsolete, you should use setMnemonic(int mnemonic) with the appropriate VK_E instead.

In any case the default behaviour is to underline first occurrence of the letter, if present. If you want to customize this thing you should look at AbstractButton class, it has a method (doc here:

public void setDisplayedMnemonicIndex(int index)

that does exactly what you need. So:

openProjectMenuItem.setMnemonic(VK_E);
openProjectMenuItem.setDisplayedMnemonicIndex(9);

来源：https://stackoverflow.com/questions/4175938/another-way-to-set-mnemonic-for-jmenuitem